检索结果-内蒙古大学图书馆

5th International Conference on Artificial Intelligence and Electromechanical Automation, AIEA 2024

作者： Su, Haiping Wang, Yang Sun, Fan Chen, Yujie Xiangtan University School of Physics and Optoelectronics Hunan Xiangtan411105 China Hunan Engineering Laboratory for Microelectronics Optoelectronics and System on A Chip Hunan Xiangtan411105 China

ISBN: (纸本)9798350366174

Optical fiber fluorescence temperature measurement technology combines optical fiber technology with fluorescence sensing technology, and uses optical fiber to transmit light and the temperature sensitivity characteristics of fluorescent substances, so as to realize temperature detection in a variety of occasions and even in harsh environments, with a series of advantages such as strong anti-interference, remote detection and real-time monitoring. Compared with the contact measurement of traditional active temperature measurement equipment, it is more suitable for temperature detection in extreme environments such as strong electromagnetic fields and high-voltage corrosion. In view of a series of shortcomings such as the traditional temperature measurement system being susceptible to external environmental interference, a small and practical fluorescence temperature measurement system was designed in this paper. The whole temperature measurement system is divided into three parts: optical path design, circuit design and program design. The purpose of this paper is to design a high-precision temperature measurement system to solve the problem of difficult temperature measurement in related fields. Experiments are carried out in the temperature range of -44°C ∼ 120°C, and the measurement accuracy of the designed system is within the range of ± 1°C and the best temperature measurement accuracy is about ± 0.1°C. © 2024 IEEE.

关键词： Temperature measurement

来源：评论

学校读者我要写书评

暂无评论

High-precision nondestructive evaluation of a thermal barrier coating based on perovskite quantum dot anion exchange

引用

Nano Research 2024年第5期17卷 4582-4592页

作者： Tao Han Shufang Ding Zifan Wang Sirong Jiang Pengjiang Jing Tianshang Yi Yaqi Chen Chunzhi Jiang Xiaofeng Zhang Microelectronics and Optoelectronics Technology Key Laboratory of Hunan Higher Education School of Physics and Electronic Electrical EngineeringXiangnan UniversityChenzhou 423000China National Engineering Laboratory for Modern Materials Surface Engineering Technology&The Key Lab of Guangdong for Modern Surface Engineering Technology Guangdong Institute of New MaterialsGuangdong Academy of SciencesGuangzhou 510650China

Thermal barrier coatings(TBCs)in gas turbine engines are used in expressly harsh environments;thus,assessing TBC integrity status is critical for safety and ***,traditional periodic maintenance involves visual inspections of the TBCs,requiring the gas turbine to be decommissioned and partially *** importantly,tiny defects or internal damages that easily cause coating failure cannot be *** this work,a new nondestructive evaluation(NDE)technique of TBCs based on quantum dot(QD)anion exchange is first explored *** exchanging anions between the Cl ions and the CsPbBr_(3) QDs,the degrees of salt corrosion of the TBCs are *** resultant NDE technique shows that the colour of the TBCs obviously changes from green to blue,accompanied by a large blueshift(~100 nm)of the photoluminescence(PL)peak *** addition,the relationship between the PL peak position and coating thermophysical properties indicates that the precision of this NDE technique may easily identify theμm-level of the thermal growth oxide(TGO)changes inside the TBCs.

关键词： thermal barrier coatings nondestructive evaluation CsPbBr_(3)quantum dot anion exchange thermal growth oxide

来源：评论

学校读者我要写书评

暂无评论

Design and implementation of a rail-to-rail operational amplifier for photoelectric detection 5

Design and implementation of a rail-to-rail operational ampl...

引用

5th International Conference on Artificial Intelligence and Electromechanical Automation, AIEA 2024

作者： Wang, Yang Sun, Fan Su, Haiping Yang, Jian Xiangtan University School of Physics and Optoelectronics Hunan Xiangtan411105 China Hunan Engineering Laboratory for Microelectronics Optoelectronics and System on A Chip Hunan Xiangtan411105 China Hunan Normal University School of Physics and Optoelectronics Hunan Changsha411105 China

ISBN: (纸本)9798350366174

Photoelectric detection circuit is widely used in fluorescence temperature measurement, optical communication and other fields. In this thesis, a rail-to-rail operational amplifier for photodetection is designed based on a 0.18 um CMOS process. The operational amplifier input stage adopts complementary differential input pairs to provide rail-to-rail common-mode input range, and adopts a folded common-source common-gate structure to improve the gain of the input stage, so that it can realize linear amplification over the entire input voltage range, and can efficiently process the weak signals from photodetector devices. Signals from photodetector devices can be handled efficiently. The output stage of the operational amplifier is a Class AB output, which can drive large loads and provide a rail-to-rail output voltage range. Simulation results show that the low frequency gain of the amplifier is 153 dB, the input offset voltage is 1.7 uV, and the bandwidth is 8.4 MHz under the condition of 3.3 V supply voltage and 25°C. The operational amplifier has a wide input range, high gain, low input offset voltage and wide bandwidth, and its performance has been verified by tests. The results show that the rail-to-rail operational amplifier design can effectively improve the signal processing capability of the photoelectric detection system, and provide reliable technical support for practical applications. © 2024 IEEE.

关键词： Bandwidth

来源：评论

学校读者我要写书评

暂无评论

Dynamic mesophase transition induces anomalous suppressed and anisotropic phonon thermal transport

引用

npj Computational Materials 2024年第1期10卷 239-248页

作者： Linfeng Yu Kexin Dong Qi Yang Yi Zhang Zheyong Fan Xiong Zheng Huimin Wang Zhenzhen Qin Guangzhao Qin State Key Laboratory of Advanced Design and Manufacturing Technology for Vehicle College of Mechanical and Vehicle EngineeringHunan UniversityChangsha410082People’s Republic of China College of Physical Science and Technology Bohai UniversityJinzhou121013People’s Republic of China Hunan Key Laboratory for Micro-Nano Energy Materials&Device and School of Physics and Optoelectronics Xiangtan UniversityXiangtan411105 HunanChina School of Physics and Microelectronics Zhengzhou UniversityZhengzhou450001China Research Institute of Hunan University in Chongqing Chongqing401133China Greater Bay Area Institute for Innovation Hunan UniversityGuangzhou511300 Guangdong ProvinceChina

The physical/chemical properties undergo significant transformations in the different states arising from phase ***,due to the lack of a dynamic perspective,transitional mesophases are largely underexamined,constrained by the high resource burden of first ***,usingmolecular dynamics(MD)simulations empowered by the machine-learning potential,we proffer an innovative paradigm for phase transition:regulating the thermal transport properties via the transitional mesophase triggered by a uniaxial force *** investigate the mechanical,electrical,and thermal transport properties of the two-dimensional carbon allotrope of Janus-graphene with strain-engineered phase ***,we found that the transitional mesophase significantly suppresses the thermal conductivity and induces strong anisotropy near the phase transition *** machine-learning-driven MD simulations,we achieved highprecision atomic-level simulations of *** results show that thermal vibrationinduced intermediate amorphous or interfacial phases induce strong and anisotropic interfacial thermal *** investigation not only endows uswith a novel perspective onmesophases during phase transitions but also enhances our holistic comprehension of the evolution of material properties.

关键词： thermal transition transport

来源：评论

学校读者我要写书评

暂无评论

Insight into vertical piezoelectric characteristics regulated thermal transport in van der Waals two-dimensional materials

引用

Rare Metals 2024年第2期43卷 770-779页

作者： Dong-Hai Wei E Zhou Jin-Yuan Xu Hui-Min Wang Chen Shen Hong-Bin Zhang Zhen-Zhen Qin Guang-Zhao Qin State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan UniversityChangsha410082China Hunan Key Laboratory for Micro-Nano Energy Materials and Device and School of Physics and Optoelectronics Xiangtan UniversityXiangtan411105China Institute of Materials Science Technical University of DarmstadtAlarich-Weiss-Str.264287DarmstadtGermany School of Physics and Microelectronics Zhengzhou UniversityZhengzhou450001China

The urgent demand of extreme(ultra-high/low)thermal conductivity materials is triggered by the high-power device,where exploring the theories and mechanisms of regulating thermal transport properties plays a key ***,we elaborately investigate the effect of vertical(out-of-plane)piezoelectric characteristics on thermal transport,which is historically *** different stacking-order(AA and AB)bilayer boron nitride(Bi-BN)in two-dimensional(2D)materials are selected as study *** performing state-of-the-art first-principles calculations,it is found that the polarization charge along the out-of-plane orientation ascends significantly with the increasing piezoelectric response in AB stacked Bi-BN(Bi-BN-AB)followed by the enhanced interlayer B–N atomic ***,the amplitude of phonon anharmonicity in Bi-BN-AB increases larger than that in the AA stacked Bi-BN(Bi-BN-AA),resulting in the dramatic weakening of the thermal conductivity by 20.34%under 18%*** research reveals the significant role of the vertical(out-of-plane)piezoelectric characteristic in regulating thermal transport and provides new insight into accurately exploring the thermal transport performance of 2D van der Waals materials.

关键词： Thermal conductivity Piezoelectric effect 2D materials Bilayer BN Strain engineering

来源：评论

学校读者我要写书评

暂无评论

Defects in monolayer WS2 grown via sulfurization of WSe2

引用

Progress in Natural Science:Materials International 2024年第2期34卷 323-328页

作者： Shunhui Zhang Xiang Lan Hang Liu Xuyang Zhang Baihui Zhang Zhikang Ao Tian Zhang Peng Chen Xiangdong Yang Fangping Ouyang Zhengwei Zhang Hunan Key Laboratory of Nanophotonics and Devices School of Physics Central South University College of Materials Science and Engineering Hunan University Physical Sciences and Engineering Division King Abdullah University of Science and Technology School of Energy and Power Engineering Changsha University of Science and Technology School of Flexible Electronics (Future Technologies) Institute of Advanced Materials Jiangsu National Synergetic Innovation Centre for Advanced Materials Nanjing Tech University School of Microelectronics Southern University of Science and Technology Institute of Micro/Nano Materials and Devices Ningbo University of Technology

The conversion of chalcogen atoms into other types of chalcogen atoms in transition metal dichalcogenides exhibits significant advantages in tuning the bandgaps and constructing lateral ***,despite atomic defects at the atomic scale were inevitably formed during conversion process,the construction of dislocations remains ***,we conducted in-situ sulfurization to achieve structural transformation from monolayer WSe2to *** probe these transformations at atomic scale using high-angle annular dark field scanning transmission electron microscopy（HAADF-STEM） and study structural defects of sulfurizedWS2by strain and displacement *** discovered that high-quality WSe2flakes were completely sulfurized while dislocations were successfully constructed,manifesting atomic surface roughness and structural *** work provides insights into designing and optimizing customized Transition metal dichalcogenides（TMDs）materials in controlled synthesis and defect engineering.

关键词： Tungsten disulfide Tungsten diselenide Sulfurization Dislocations Strain and displacement fields

来源：评论

学校读者我要写书评

暂无评论

Interfacial Polymer Engineered Field Effect Transistor Biosensors for Rapid and Efficient Identification of SARS-CoV-2 N Antigen

引用

Chinese Journal of Chemistry 2023年第18期41卷 2253-2260页

作者： Qiumin Peng Wanting Huang Duo Chen Zhipeng Gao Yanbing Yang Quan Yuan College of Chemistry and Molecular Sciences Key Laboratory of Biomedical Polymers of Ministry of EducationInstitute of Molecular MedicineRenmin Hospital of Wuhan UniversitySchool of MicroelectronicsWuhan UniversityWuhanHubei 430072China Molecular Science and Biomedicine Laboratory(MBL) State Key Laboratoryof Chemo/Biosensing and ChemometricsCollege of Chemistryand Chemical EngineeringHunan UniversityChangshaHunan 410082China

With the advantages of high sensitivity,rapid response,label-free,and simple operation,field effect transistor biosensors have shown promising application prospects in large-scale pathogen ***,in practical biological fluids with relatively high ionic strength,such as saliva and serum,the Debye screening effect will weaken the interaction between FET biosensors and target bio-molecules,thereby affecting the sensing sensitivity and accuracy.

关键词： Field effect transistor Debye screening effect Biosensing Interfacial engineering Epidemic screening

来源：评论

学校读者我要写书评

暂无评论

Robust beamforming design for energy harvesting efficiency maximization in RIS-aided SWIPT system

引用

Digital Communications and Networks 2024年第6期10卷 1804-1812页

作者： Xingquan Li Hongxia Zheng Chunlong He Xiaowen Tian Xin Lin School of Microelectronics Shenzhen Institute of Information TechnologyShenzhen518000China School of Electronic and Communication Engineering Shenzhen Polytechnic UniversityShenzhen518060China Guangdong Key Laboratory of Inteligent Information Processing Shenzhen UniversityShenzhen518060China College of Physics and Electromechanical Engineering Jishou UniversityHunan416000China Institute of Artificial Intelligence and Blockchain Guangzhou UniversityGuangzhou416000China

This paper investigates Energy Harvesting Efficiency(EHE)maximization problems for Reconfigurable Intelligent Surface(RIS)aided Simultaneous Wireless Information and Power Transfer(SWIPT).This system focuses on the imperfect RIS-related channel and explores the robust beamforming design to maximize the EHE of all energy receivers while respecting the maximum transmit power of the Access Point(AP),RIS phase shift constraints,and maintaining a minimum signal-to-interference plus noise ratio for all information receivers under both linear and non-linear EH *** solve these non-convex problem,the channel uncertainty related infinite constraints are approximated by using the *** the introduction of slack variables,the transformed subproblems can be iteratively solved using alternating *** results demonstrate that RIS is able to increase the system EHE.

关键词： Energy Harvesting Efficiency(EHE) Reconfigurable Intelligent Surface(RIS) Simultaneous Wireless Information and Power Transfer(SWIPT) Imperfect Channel State Information(CSI)

来源：评论

学校读者我要写书评

暂无评论

Persistent luminescence encoding for rapid and accurate oral-derived bacteria identification

引用

Chinese Chemical Letters 2025年第1期36卷 459-463页

作者： Chaohui Zheng Jing Xi Shiyi Long Tianpei He Rui Zhao Xinyuan Luo Na Chen Quan Yuan The Second Affiliated Hospital of Fujian Medical University Quanzhou 362000China Renmin Hospital of Wuhan University College of Chemistry and Molecular SciencesInstitute of Molecular MedicineSchool of MicroelectronicsWuhan UniversityWuhan 430072China Molecular Science and Biomedicine Laboratory(MBL) State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China

The dysbiosis of oral microbiota contributes to diseases such as periodontitis and certain cancers by triggering the host inflammatory *** methods for the immediate and sensitive identification of oral microorganism is crucial for the rapid diagnosis and early interventions of associated *** methods for microbial detection primarily include the plate culturing,polymerase chain reaction and enzyme-linked immunosorbent assay,which are either time-consuming or ***,we reported a persistent luminescence-encoded multiple-channel optical sensing array and achieved the rapid and accurate identification of oral-derived *** results demonstrate that electrostatic attractions and hydrophobic-hydrophobic interactions dominate the binding of the persistent luminescent nanoprobes to oral microorganisms and the microbial identification process can be finished within 30 ***,a total of 7 oral-derived microorganisms demonstrate their own response patterns and were differentiated by linear discriminant analysis(LDA)with the accuracy up to 100%both in the solution and artificial saliva ***,the persistent luminescence encoded array sensor could also discern the microorganism mixtures with the accuracy up to 100%.The proposed persistent luminescence encoding sensor arrays in this work might offer new ideas for rapid and accurate oralderived microorganism detection,and provide new ways for disease diagnosis associated with microbial metabolism.

关键词： Oral microorganisms Persistent luminescent nanoprobes Optical sensing array Fingerprint physicochemical properties Linear discriminant analysis

来源：评论

学校读者我要写书评

暂无评论

A zincophilic molecular brush for a dendrite-free,corrosionresistant,zinc metal anode with a long life cycle

引用

Nano Research 2024年第1期17卷 390-396页

作者： Penggao Liu Jia Guo Xinyue Chen Ting Wang Yanping Huang Shasha Gao Tao Wang Dongling Wu Kaiyu Liu State Key Laboratory of Chemistry and Utilization of Carbon based Energy Resources College of ChemistryXinjiang UniversityUrumqi 830017China Hunan Provincial Key Laboratory of Chemical Power Sources College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China Key Laboratory of New Low-carbon Green Chemical Technology School of Chemistry and Chemical EngineeringEducation Department of Guangxi Zhuang Autonomous RegionGuangxi UniversityNanning 530004China Key Laboratory of Microelectronics and Energy of Henan Province Department of Physics and Electronic EngineeringXinyang Normal UniversityXinyang 464000China Interdisciplinary Research Center for Sustainable Energy Science and Engineering(IRC4SE2) School of Chemical EngineeringZhengzhou UniversityZhengzhou 450001China

Zinc-based aqueous rechargeable batteries have attracted extensive attention due to their low cost,safety,and environmental ***,dendrite growth and hydrogen evolution of Zn anodes limit their large-scale application.A new strategy to produce a polyacrylamide/reduced graphene oxide(PAM@rGO)molecular nanobrush coating and control Zn electrolyte interface engineering is proposed for use in highly reversible Zn plating/*** evolution is inhibited,and Zn deposition is consolidated using the rich zincophilic functional groups of the branched polyacrylamide chain and the high conductivity of *** to the synergistic effects of corrosion resistance and dendrite-free growth,PAM@rGO/Zn provides prolonged and reversible Zn plating/*** functional theory(DFT)calculations expand on homogenized *** PAM@rGO/Zn||activated carbon(AC)capacitor exhibits long cyclic stability,fast ion transfer,and minimal interfacial *** study provides experimental and theoretical bases for the structural design of Zn anode.

关键词： zincophilic nanobrush polyacrylamide/reduced graphene oxide(PAM@rGO)/Zn surface modification Zn based energy storage

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：